html,
body,
#root {
  width: 100%;
  height: 100%;
}
.container-box {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: row;
}
#container {
  flex: 1;
}
.menu {
  width: 150px;
  background-color: azure;
}
.menu a,
.menu div {
  display: inline-block;
  width: 100%;
  height: 40px;
  line-height: 40px;
}
